Anna,
I find scroll sawn boxes very interesting. Have you considered laminating a sawn exterior over a base substrate, to create a layered box? Seems to me like it would offer some exciting possibilities. And it would involve thinner material, which I would think would be attractive. (Particularly since too-thick sides are undesirable.) I’m thinking of layers of colors or layers of wood pattern. I’m not a scroller, so I’m not the one to try it out. It will fall to someone else. Perhaps you?

Your Celtic patterns are very attractive.
Roger